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No. 6l4,939. l v Patented Nov; 29, |898. A. S. EBERMAN.

INJECTOB FR STEAM BOILERS.

(Application filed Apr. 27, 1898.)

No. 6I4,939. Patented Nov. 29, |898. A. S. EBERMAN.

INJEGTOB FOR STEAM BOILERS.

(Application filed Apr. 27, 1898.)

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5 l al [l 6L -o' ms 5 e s, IMP ewor UNITED STATES gPATENT OFFICE.

ALBERT S. EBERMAN, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-HALF TOENOOII HABLAN, OF SAME PLACE.

INJECTOR FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 614,939, dated November29, 1898. Application tiled April 27, 1898. Serial No. 678,964. (Model.)

To all whom t may concern.-

Be it known that I, ALBERT S. EBERMAN, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Injectors for Steam-Boilers ;V and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to an improvement in injectors for supplying feedto steam-boilers, its object being to simplify the construction andincrease the efficiency by giving a positive simultaneous action to theseveral valves by manipulation of the main stem, which valves are soarranged with relation to eachv other and to the stem that 'one willopen slightly in advance of the other, admitting steam to each chamberand steam-j et successively, thereby accelerating the action as eachvalve is successively opened and also at the proper time opening andclosing the valve for the overiiow.

To this end it consists in certain details of construction andarrangement of parts hereinafter described in the specification andillustrated in the accompanying drawings, forming a part of thisspecification, and in which- Figure l is a central longitudinal sectionwith the parts in the positions they occupy When in operation. Fig. 2 isa like View showing only the rst steam-valve partially opened when thesteam is rst turned on or admitted. Figi-3 is a similar view showing aslight modilication.

Like letters and numerals indicate corresponding parts.

A represents the shell or main casing of the injector, having at thetop, on one side thereof, a branch or pipe B for connection with asteam-pipe, and on the other side is a lateral projection A', and waterand steam passages and chambers are formed therein, as Will be presentlydescribed. From the outer side of lthe lateral projection is a shortpipe or branch C for connecting a water-supply pipe, Which may lead toany source of supply. The pipe or branch B connects with thesteam-passaoe.

F)lhe delivery vconnection D leads to thev G connects with thesteam-passage F through 6o a steam-jet nipple 1 above and with'the waterpassage or chamber G by means of a nozzle 2. The nipple 1 and nozzle 2are screwed into suitable seats formed for them in the casing and insuch position that they are practically in alinement and at right anglesto the water-pipe C. At the top of the casing is a hollow cap H, screwedinto a socketed and tapped projection on the casing. This constructionenables the nipple 1 and nozzle 2 to 7o be placed in their properpositions or to be removed for cleaning or repair.

In a thickened and apertured part of the casing is formed a valve-seat 5for the reception of the end of the sliding combined injector ordischarge-nozzle and combiningtube 4, which is formed vat one end as avalve 6 and which when closed prevents the passage of the water into theoveriioW-chamber G. This tube isformed near its discharge 8o end with apiston 7, which When the machine is not in operation rests on ashouldered abutment on the end of delivery D. Piston 7 is slightlysmaller than the chamber in which it is `located and when the machine isoperated permits the How of some water around it until theoverflow-valve a5 is seated.

The parts just described are substantially in alinement with the nipple1 and nozzle 2,

and the parts are connected with the casing 9o by a suitable coupling,as shown.

An overioW-chamber Gis provided, and it is in communication With thebranch B and also with the delivery connection when the valve 6 on theend of thecombining-tube is 95 open. Valls c c in the casing between thelifting chamber or passage F and overflowchamber G form the pressurepassage or chamber N.

The main shell or casing A has at the top roo an opening, into which isscrewed an internally-threaded sleeve a, and on the outer end of thesleeve is a threaded cap a', both sleeve and cap being apertured for thepassage of the main valve-stem.

A valve-seat a" is formed in a part of the casing between thelifting-chamber F and the branch B, and circular openings are formedthrough the walls of that part of the casing which forms thepressure-chamber N. Below said chamber, in the wall of the casing whichincloses the overflow chamber or passage G at one side and the outerwall of the main casing on the other side, is a valve-seat a'" for theoverflow-valve. At the end opposite the operating` lever or handle forthe valve-stem an outlet-nozzle A" for the overflow is screwed into thecasing.

A"' is the main valve stem or rod. It has a suitable lever or handle A""at the projecting end thereof for operating same. At some distance fromthe end of the stem it is screwthreaded at m to engage theinternallythreaded sleeve a- Below the threaded part of the stem is avalve 61"", and near the opposite end of the stem is a valve a5. Thesetwo valves are mounted in reverse positions on the rod, or in suchrelation that one is closed and seated in one direction and the other inthe reverse direction.

Between the two valves just described are two annular flangedprojections or pistons a6 and al, a being adapted to open and close theaperture connecting chamber F and chamber N as the valve-stem is turnedin one direction or the other and al being adapted to keep closed underall conditions the aperture between chambers N and G.

The operation of the apparatus is as follows: The valve-stem is rotatedand the valve am' raised a short distance from its seat, as shown inFig. 2, thereby admitting steam to chamber F, passing through nipple 1and nipple 2, creates a vacuum and lifts the water, causing it to flowinto chamber G (valve 6 not being yet seated) and thence by valve a5 outthrough overflow A". The valve-stem being further revolved opens theapertures connecting chambers `F and N, and the steam joins the liftedwater as it leaves the nipple 2. This steam-forced water passing throughcombining-tube creates a pressure on piston 7 at discharge end of same,forcing it endwise until it is seated at 5, the valve-stem is revolveduntil valve a5 is closed, the checkvalve is forced open, and water flowsinto boiler.

Fig. 1 shows the injector in full operative condition. Steam is beingadmitted to both lifting and pressure chambers or passages, as shown bythe arrows at :c y, the water is supposed to be passing into the boiler,and the outlet-valve for the overflow-chamber is closed.

In Fie. 3 I have shown a modified form of the injector, which, however,operates on the same general principle.

The main casing X, the lifting-chamber F', ure-chamber N',overflow-chamber G',

nipple or steam-jets l' 3', nozzle 2', combining-tube 4', and steam andwater branches or pipes, excepting that the latter are arranged at rightangles to each other instead of in alinement, are the same in all theviews.

The differences in structure and which I believe to be equivalents willnow be described.

Fig. 3 shows the modified form of injector when in operation. Thesteam-jet or nipple 1 and nozzle 2' are screwed into tapped portions ofthe case adjacent to the water branch C and in the same relation as inFig. 1. The steam, however, is admitted through the branch ll to thelifting-chamber and steamjet or nipple 1', and the surplus steam passesprimarily into the lifting passage or chamber F. Screwed into the wallof the pressure chamber or passage is a nozzle or steam-port 3', and itis arranged directly over the mouth of the combining-tube 4.', which, asalready stated, is of the same constructionand arranged in substantiallythe same manner as in Fig. 1. The main casing X has a valveseat d, whichwhen open forms an outlet for the overflow-cham ber G to the overflowoutletnozzle. The main valve-stem S carries on one end a piston-valveS'. The free end of the valve-stem is beveled, as at S", so that seatedit will close the outlet in the overflow-nozzle. The valve-stem isreciprocated in suitable bearings formed in the walls of the casing anda plug screwed therein at the handle or lever end of the stem. A handleor lever T is pivoted at the end of the valve-stem for operating thesame, and said lever or handle projects a short distance beyond itspivotal point, and to its extreme end is pivoted a link T', and theother end of said link is pivoted to the valve-stem a suitable distancefrom the handle or lever T. The walls of the pressure chamber N' haveholes or apertures piercing same, as in Fig. 1, and the enlarged end S'of the valve-stem closes the opening or port which admits steam from thelifting-chamber to the pressure-chamber when moved in one direction andopens the outlet-valve, while the steam-port is closed and theoutlet-valve opened when moved in the opposite direction.

The operation of the injector is the same as before described, with theexception that steam is admitted directly to the steam-jet or nipple atthe end or top and that it is admitted to the combining-tube from thepressure-chamber through a steam-jet or nozzle instead of directly intothe combiningtube, as in Fic. 1.

Minor changes may be made within the scope of the invention withoutdeparting from the spirit or sacriiicing any of the advantages thereof.

IIaving thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-Y- l. An injector forsteam-boilers, having branches or pipes for the admission of steam andwater, a lifting passage or chamber, a

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pressure-chamber, an overflow-chamber, a steam-j et or nipple, alongitudinally-movable combining tube with a valve at each end thereofand valves for regulating the pressure of the steam and iioW of theWater substantially as described.

2. An injector for steam-boilers having branches or pipes for theadmission of steam and Water, a lifting-chamber, a pressurechamber, anoverflow-chamber, means for conveying the Water to the boiler, a valvefor admitting steam to the lifting-chamber, and a valve for theoverflow, both mounted on a rigid longitudinally-movable valve-stem inreverse positions, so that by the operation of the stem the one valve isopened and the other closed and vice versa, substantially as described.

3. An injector for steam-boilers having branches or pipes for theadmission of steam and Water, a lifting chamber, a pressurechamber, anoverflow-chamber, means for conveying the Water to the boiler, a valvefor admitting steam to the lifting-chamber and a valve for theoverflow-chamber, mounted on a rigid longitudinally-movable valve-stemin reverse positions and a valve or piston intermediate of said valves,for opening and closing a port in the Walls of the pressurechamber, allsimultaneously operated, substantially as described.

4. An injector for steam boilers having branches or pipes for theadmission of steam and water, a liftingchamber, a pressurechamber andoverflow-chamber, means for conveying water to the boiler, a valve foradmitting steam to the lifting-chamber and a Valve for theoverflow-chamber mounted on a rigid longitudinally-movable valve-stem inreverse positions, and a valve or piston intermediate the other twovalves arranged in such relation to its port and the lifting-valve, thatthe lifting-valve Will be opened slightly in advance of thepiston-valve, and all the valves simultaneously operated, substantiallyas described.

5. An injector for steam -boilers having branches or pipes for theadmission of steam or Water, a lifting-chamber, a pressure-chamber, anoverflow-chamber, means for conveying Water to the boiler, a valve foradmit-ting steam to the lifting-chamber and a valve for theoverflow-chamber, mounted on a rigid longitudinally-movable valve-stemin reverse positions and a valve or piston intermediate of said valves,for openi'ng and closing a port in the Walls of the pressure-chamber,all simultaneously operated, substantially as described.

6. An injector for steam-boilers having branches or pipes for theadmission of steam and Water, means for conveying Water to the boiler, alifting-chamber and an overflowchamber in practical alinement, apressurechamber between them, a screW- operated rigidlongitudinally-movable valve-stem carrying one valve for thelifting-chamber, one for the pressure-chamber, and one for the overflow,all simultaneously operated, substantially as described.

7. In an injector for steam-boilers, the combination of a steam-jetlifting device, With a steam-jet forcing device, a longitudinallymovingstem provided With valves arranged to admit steam to the forcing deviceand close overflow When moved in one direction, and to open overiioW andshut od steam from forcing device When moved in an opposite direction,substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

ALBERT S. EBERMAN.

